A combined drying oven for uniform drying and its method

Abstract

The present invention discloses a combined drying oven and a method thereof for uniform drying in the technical field of hollow fiber membrane production. A combined drying oven for uniform drying includes a drying oven and a heat pump dryer arranged outside the drying oven. A base is arranged inside the drying oven, and a support column is rotatably connected to the base. The top end of the support column is fixedly connected with a turntable. Circular first sliding rails, second sliding rails and third sliding rails are arranged on the turntable. The diameters of the first sliding rail, the second sliding rail and the third sliding rail decrease in sequence from outside to inside. The first sliding rail and the second sliding rail are communicated through a first communication groove, the second sliding rail and the third sliding rail are communicated through a second communication groove, and the first sliding rail and the third sliding rail are communicated through a third communication groove. The first communication groove, the second communication groove and the third communication groove are all arranged in two in a circumferential array about the turntable. The present invention can greatly improve the drying efficiency of the hollow fiber membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of hollow fiber membrane production, and particularly to a combined drying oven with uniform drying and its method. Background Technique

[0002] Hollow fiber membranes are mainly made of polysulfone and dimethylacetamide as raw materials to process fiber filaments with a hollow inner cavity, and have selective permeation characteristics. Currently, common hollow fiber membranes mainly include reverse osmosis membranes, ultrafiltration membranes, microfiltration membranes, dialysis membranes, and gas separation membranes, etc.; hollow fiber membranes need to be dried during the production process.

[0003] When drying existing hollow fiber membranes, a heat pump dryer is usually used to complete the drying. When the hollow fiber membranes are dried in the drying chamber, the hollow fiber membranes on the side close to the heat pump dryer have a faster drying speed. However, since the hollow fiber membranes cannot move in the drying chamber, it will cause the hollow fiber membranes on the side close to the heat pump dryer to have a longer drying time, and it is easy to cause damage to the central fiber membranes; the hollow fiber membranes on the side far from the heat pump dryer have less hot air, and the drying efficiency is slower.

[0004] Based on this, the present invention designs a combined drying oven with uniform drying and its method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined drying oven with uniform drying and its method to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A combined drying oven with uniform drying, including a drying oven and a heat pump dryer arranged outside the drying oven. A base is arranged inside the drying oven, and a support column is rotatably connected to the base. The top of the support column is fixedly connected to a turntable. Circular first, second, and third slide rails are provided on the turntable. The diameters of the first, second, and third slide rails decrease in sequence from the outside to the inside. The first slide rail and the second slide rail are connected through a first communication groove, the second slide rail and the third slide rail are connected through a second communication groove, and the first slide rail and the third slide rail are connected through a third communication groove. The first communication groove, the second communication groove, and the third communication groove are each provided with two arranged in a circumferential array with respect to the turntable; Brackets are slidably connected in the first, second, and third slide rails, and first driving components are arranged in the first communication groove and the second communication groove; The first driving component is used to drive the bracket in the first slide rail to move into the second slide rail and drive the bracket in the second slide rail to move into the third slide rail; A second driving component is arranged in the third communication groove, and the second driving component is used to drive the bracket in the third slide rail to move into the first slide rail; A third driving component for driving the turntable to rotate is arranged inside the drying oven.

[0007] As a further solution of the present invention, the first driving assembly includes a first mounting frame, the first mounting frame is connected to the turntable, a plurality of first belt pulleys are rotatably connected in the first mounting frame, the plurality of first belt pulleys are commonly drivingly connected with a first transmission belt, a first gear is fixedly connected to the rotating shaft of the top first belt pulley, and the second driving assembly can drive the first gear to rotate.

[0008] As a further solution of the present invention, the first mounting frame is slidably connected to the turntable in the vertical direction, and a first spring for its reset is fixedly connected to the first mounting frame; two pushing blocks are fixedly connected to the top of the drying box, the pushing blocks are used to drive the first mounting frame to move downward, and the pushing blocks are arranged on the side of the turntable close to the heat pump dryer.

[0009] As a further solution of the present invention, the second driving assembly includes a mounting plate and a driving mechanism; the mounting plate is fixedly installed on the top of the drying box, a push rod is arranged below the mounting plate, the push rod can push the bracket to move in the third communication groove, and a cylindrical cam is rotatably connected to the mounting plate; a cam groove is formed in the cylindrical cam, a convex block is slidably fitted in the cam groove, and the convex block can drive the push rod to move; a first motor is fixedly connected to the mounting plate, and the output shaft of the first motor is fixedly connected to the rotating shaft of the cylindrical cam; the driving mechanism is used to drive the first gear to rotate while the cylindrical cam rotates.

[0010] As a further solution of the present invention, a fixed plate is fixedly connected to the bottom of the mounting plate, a guiding chute is formed in the fixed plate, the guiding chute is arranged in a parallelogram shape, a guiding column is slidably connected in the guiding chute, the guiding column is fixedly connected to the push rod, the push rod is slidably connected to a sliding rod in the vertical direction, a second spring for its reset is fixedly connected to the push rod, the sliding rod is slidably connected to the fixed plate, and the convex block is fixedly connected to the top of the sliding rod.

[0011] As a further solution of the present invention, the driving mechanism includes a first sprocket, which is fixedly connected to the rotating shaft of the cylindrical cam. The first sprocket is connected to a second sprocket and a third sprocket through a chain drive. Both the second sprocket and the third sprocket are rotatably connected to the mounting plate. A worm is fixedly connected to the rotating shaft of the second sprocket, and the worm is drivingly connected to a turbine; a first bevel gear is fixedly connected to the rotating shaft of the turbine, and the first bevel gear meshes with a second bevel gear; a second gear is fixedly connected to the rotating shaft of the third sprocket, and the second gear meshes with a third gear; both the second bevel gear and the third gear are rotatably connected to a second pulley, and the second pulleys are rotatably connected to a second mounting frame; both the turbine, the second bevel gear and the third gear are rotatably connected to the second mounting frame; the second pulleys are all drivingly connected to a third pulley through a second drive belt, and the third pulley is rotatably connected to the second mounting frame; a fourth gear is fixedly connected to the rotating shaft of the third pulley, and the fourth gear can mesh with the first gear.

[0012] As a further solution of the present invention, the second mounting frame is elastically slidably connected to the turntable in the vertical direction.

[0013] As a further solution of the present invention, the bracket is composed of a slider, a hanging rod and a stop block. The slider is slidably connected to the first slide rail, the second slide rail and the third slide rail. The hanging rod is fixedly connected to the bottom end of the slider, and the hanging rod is provided in a threaded shape. The stop block is fixedly connected to the hanging rod.

[0014] As a further solution of the present invention, the third driving assembly includes a second motor, which is fixedly connected to the base, and the rotating shaft of the second motor is fixedly connected to the support column.

[0015] A combined drying method for uniform drying, which includes the following steps:

[0016] Step 1: Place the hollow fiber membrane to be dried on the bracket, and then start the heat pump dryer to blow hot air into the drying box.

[0017] Step 2: After the hollow fiber membrane on the bracket close to the heat pump dryer is dried for a certain period of time, the third driving assembly is used to drive the turntable to rotate half a circle.

[0018] Step 3: Then the bracket located in the first slide rail will move into the second slide rail and the third slide rail; and the bracket in the third slide rail at the middle position of the turntable will move to the right side of the first slide rail to wait for drying.

[0019] Step 4: Repeat the working processes of Step 2 and Step 3 until the hollow fiber membrane is dried.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention is provided with a turntable, a first slide rail, a second slide rail, a third slide rail, a first communication groove, a second communication groove, a third communication groove and a bracket. By rotating the turntable, the hollow fiber membranes on the brackets located in the first slide rail can be interchanged in position. The hollow fiber membranes close to the heat pump dryer in the initial state can be moved to the side away from the heat pump dryer after being dried to a certain extent, which can prevent the hollow fiber membranes from being damaged due to continuous drying. At the same time, the hollow fiber membranes on the side away from the heat pump dryer can be rotated to the left, which can improve the drying efficiency of the hollow fiber membranes on the side away from the heat pump dryer. Through the arrangement of the first driving assembly and the second driving assembly, the dried hollow fiber membranes can be transferred to the middle position of the turntable, and at the same time, the hollow fiber membranes located at the middle position of the turntable can be transferred into the first slide rail to better and more directly contact the hot air generated by the heat pump dryer, which can greatly improve the drying efficiency of the hollow fiber membranes and can better ensure that the hollow fiber membranes will not be damaged during drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the bottom view of the turntable and some of its structures of the present invention;

[0024] Figure 3 is a schematic diagram of the cross-section of the first mounting frame and its internal structure of the present invention;

[0025] Figure 4 is a schematic diagram of some structures of the present invention;

[0026] Figure 5 is of the present invention Figure 4 in a sectional view of the state;

[0027] Figure 6 is Figure 5 a partial enlarged view of A in

[0028] Figure 7 is a schematic diagram of the fixed plate and the guiding chute structure of the present invention;

[0029] Figure 8 is a schematic diagram of the driving mechanism structure of the present invention;

[0030] Figure 9 is a schematic diagram of the bracket structure of the present invention;

[0031] Figure 10 is a flowchart of the method of the present invention.

[0032] In the drawings, the list of components represented by each reference numeral is as follows:

[0033] Drying oven 1, heat pump dryer 2, base 3, support column 4, turntable 5, first slide rail 6, second slide rail 7, third slide rail 8, first communication groove 9, second communication groove 10, third communication groove 11, bracket 12, slider 121, hanging rod 122, stop block 123, first mounting frame 13, first pulley 14, first drive belt 15, first gear 16, first spring 17, push block 18, mounting plate 19, push rod 20, cylindrical cam 21, cam groove 22, convex block 23, first motor 24, fixing plate 25, guide chute 26, guide post 27, slide bar 28, second spring 29, first sprocket 30, chain 31, second sprocket 32, third sprocket 33, worm 34, turbine 35, first bevel gear 36, second bevel gear 37, second gear 38, third gear 39, second pulley 40, second mounting frame 41, second drive belt 42, third pulley 43, fourth gear 44, second motor 45. Detailed implementation mode

[0034] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a combined drying oven for uniform drying, including a drying oven 1 and a heat pump dryer 2 arranged outside the drying oven 1. A base 3 is arranged in the drying oven 1. A support column 4 is rotatably connected to the base 3. The top end of the support column 4 is fixedly connected with a turntable 5. Circular first slide rail 6, second slide rail 7 and third slide rail 8 are arranged on the turntable 5. The diameters of the first slide rail 6, second slide rail 7 and third slide rail 8 decrease in sequence from outside to inside. The first slide rail 6 and the second slide rail 7 are communicated through a first communication groove 9. The second slide rail 7 and the third slide rail 8 are communicated through a second communication groove 10. The first slide rail 6 and the third slide rail 8 are communicated through a third communication groove 11. The first communication groove 9, the second communication groove 10 and the third communication groove 11 are all arranged in two in a circumferential array about the turntable 5. Brackets 12 are slidably connected in the first slide rail 6, second slide rail 7 and third slide rail 8 respectively. First driving components are arranged in the first communication groove 9 and the second communication groove 10 respectively. The first driving component is used for driving the bracket 12 in the first slide rail 6 to move into the second slide rail 7, and driving the bracket 12 in the second slide rail 7 to move into the third slide rail 8. A second driving component is arranged in the third communication groove 11. The second driving component is used for driving the bracket 12 in the third slide rail 8 to move into the first slide rail 6. A third driving component for driving the turntable 5 to rotate is arranged in the drying oven 1.

[0035] When the above solution is put into actual use, such as Figure 1As shown, the staff opens the door of the drying oven 1 (not shown in the figure), and then hangs the hollow fiber membrane to be dried on the bracket 12; then closes the door, starts the heat pump dryer 2, and the heat pump dryer 2 blows hot air into the drying oven 1. The hot air will first blow onto the hollow fiber membrane close to the heat pump dryer 2. After the heat pump dryer 2 works for a period of time, start the third driving component; the third driving component will drive the support column 4 to drive the turntable 5 to rotate 180°. At this time, the hollow fiber membrane that was close to the heat pump dryer 2 in the initial state rotates to a position far from the heat pump dryer 2; as Figure 2 shown, at this time, the first slide rail 6 will drive the bracket 12 to move towards the side close to the first communication groove 9. After the bracket 12 moves into the first communication groove 9, the first driving component will drive the bracket 12 to move from the first slide rail 6 to the second slide rail 7, and then the second slide rail 7 will drive the bracket 12 located therein to rotate clockwise in the state Figure 2 shown. When the bracket 12 rotates into the second communication groove 10, the first driving component in the second communication groove 10 will drive the bracket 12 to move from the second slide rail 7 to the third slide rail 8, and then the third slide rail 8 will drive the bracket 12 located therein to move clockwise as well. When the bracket 12 moves into the third communication groove 11, the second driving component will drive the bracket 12 to move from the third slide rail 8 to the first slide rail 6; it should be noted that the bracket 12 located in the third slide rail 8 will cycle from the two third communication grooves 11 to the first slide rail 6; and the brackets on the front and back sides of the first communication groove 9 on the right side will also cycle from the first communication groove 9 to the second slide rail 7; through the settings of the turntable 5, the first slide rail, the second slide rail 7, the third slide rail 8, the first communication groove 9, the second communication groove 10, the third communication groove 11 and the bracket 12, the rotation of the turntable 5 can interchange the positions of the hollow fiber membranes on the bracket 12 in the first slide rail 6, so that the hollow fiber membrane close to the heat pump dryer 2 in the initial state can move to the side far from the heat pump dryer 2 after being dried to a certain extent, which can avoid damage to the hollow fiber membrane caused by continuous drying; at the same time, the hollow fiber membrane on the side far from the heat pump dryer 2 rotates to the left, which can improve the drying efficiency of the hollow fiber membrane on the side far from the heat pump dryer 2; through the settings of the first driving component and the second driving component, the dried hollow fiber membrane can be transferred to the middle position of the turntable 5, and at the same time, the hollow fiber membrane located in the middle position of the turntable 5 can be transferred to the first slide rail 6 to better and more directly contact the hot air generated by the heat pump dryer 2, which can greatly improve the drying efficiency of the hollow fiber membrane and can better ensure that the hollow fiber membrane will not be damaged during drying.

[0036] As a further solution of the present invention, the first driving assembly includes a first mounting frame 13, the first mounting frame 13 is connected to the turntable 5, a plurality of first belt pulleys 14 are rotatably connected in the first mounting frame 13, a first transmission belt 15 is commonly driven and connected by the plurality of first belt pulleys 14, a first gear 16 is fixedly connected to the rotating shaft of the top first belt pulley 14, and the second driving assembly can drive the first gear 16 to rotate.

[0037] When the above solution is put into actual use, as Figure 3 shown, when the second driving assembly works, the second driving assembly will drive the first gear 16 to rotate, the first gear 16 will drive the top first belt pulley 14 to rotate, the top first belt pulley 14 will cooperate with other first belt pulleys 14 to drive the first transmission belt 15 to move, and the first transmission belt 15 will drive the bracket 12 located in the first communication groove 9 to move into the second slide rail 7.

[0038] As a further solution of the present invention, the first mounting frame 13 is slidably connected to the turntable 5 in the vertical direction, and a first spring 17 for its reset is fixedly connected to the first mounting frame 13; two push blocks 18 are fixedly connected to the top of the drying box 1, and the push blocks 18 are used to drive the first mounting frame 13 to move downward, and the push blocks 18 are arranged on the side of the turntable 5 close to the heat pump dryer 2.

[0039] When the above solution is put into actual use, as Figure 4 shown, when the first mounting frame 13 moves to the side close to the heat pump dryer 2, it will be pushed downward by the push block 18. After the first mounting frame 13 moves downward, it can prevent the bracket 12 on the left from moving inward from the first communication groove 9 and the second communication groove 10 on the left to the inside of the turntable; it can ensure that the hollow fiber membrane on the bracket 12 on the left can better contact with the hot air and be dried faster; when the first mounting frame 13 rotates away from the push block 18, the first mounting frame 13 will move upward under the elastic force of the first spring 17.

[0040] As a further solution of the present invention, the second driving assembly includes a mounting plate 19 and a driving mechanism; the mounting plate 19 is fixedly installed on the top of the drying box 1, a push rod 20 is arranged below the mounting plate 19, the push rod 20 can push the bracket 12 to move in the third communication groove 11, a cylindrical cam 21 is rotatably connected to the mounting plate 19; a cam groove 22 is opened on the cylindrical cam 21, a convex block 23 is slidably fitted in the cam groove 22, and the convex block 23 can drive the push rod 20 to move; a first motor 24 is fixedly connected to the mounting plate 19, and the output shaft of the first motor 24 is fixedly connected to the rotating shaft of the cylindrical cam 21; the driving mechanism is used to drive the first gear 16 to rotate while the cylindrical cam 21 rotates.

[0041] As a further solution of the present invention, a fixing plate 25 is fixedly connected to the bottom of the mounting plate 19, a guide slot 26 is provided on the fixing plate 25, the guide slot 26 is arranged in a parallelogram, a guide column 27 is slidably connected in the guide slot 26, the guide column 27 is fixedly connected to the push rod 20, the push rod 20 is slidably connected to a slide rod 28 in the vertical direction, a second spring 29 is fixedly connected to the push rod 20 for its reset, the slide rod 28 is slidably connected to the fixing plate 25, and the protrusion 23 is fixedly connected to the top of the slide rod 28.

[0042] When the above scheme is put into practical use, Figures 4 - 7 As shown, the first motor 24 drives the cylindrical cam 21 to rotate, and the cylindrical cam 21 drives the protrusion 23 to move cyclically in the front-rear direction through the cam groove 22, and the protrusion 23 drives the slide bar 28 to move synchronously, and the slide bar 28 drives the push rod 20 to move synchronously. When the push rod 20 moves to the side away from the first motor 24, the push rod 20 pushes the bracket 12 in the third slide rail 8 to move into the first slide rail 6, and the push rod 20 drives the guide column 27 to move in the guide slide groove 26. When the push rod 20 pushes the bracket 12 to move to the first slide rail 6 After that, the push rod 20 will move upward along the inclined groove of the guide slide groove 26 and break away from the contact with the bracket 12, and then the push rod 20 will move along the horizontal groove at the top of the guide slide groove 26 and move back to the initial position close to the first motor 24 under the action of the second spring 29; by setting the guide slide groove 26 to a parallelogram shape, after the push rod 20 pushes the bracket 12 to move into the first slide rail 6, the push rod 20 will not affect the normal movement of the bracket 12 in the second slide rail 7 and the third slide rail 8 when it moves close to the first motor 24.

[0043] As a further solution of the present invention, the driving mechanism includes a first sprocket 30 fixedly connected to the rotating shaft of the cylindrical cam 21. The first sprocket 30 is drivingly connected to a second sprocket 32 and a third sprocket 33 through a chain 31. Both the second sprocket 32 and the third sprocket 33 are rotatably connected to the mounting plate 19. A worm 34 is fixedly connected to the rotating shaft of the second sprocket 32, and the worm 34 is drivingly connected to a turbine 35. A first bevel gear 36 is fixedly connected to the rotating shaft of the turbine 35, and the first bevel gear 36 meshes with a second bevel gear 37. A second gear 38 is fixedly connected to the rotating shaft of the third sprocket 33, and the second gear 38 meshes with a third gear 39. Both the second bevel gear 37 and the third gear 39 are rotatably connected to a second pulley 40, and the second pulleys 40 are rotatably connected to a second mounting frame 41. The turbine 35, the second bevel gear 37 and the third gear 39 are all rotatably connected to the second mounting frame 41. The second pulleys 40 are all drivingly connected to a third pulley 43 through a second transmission belt 42, and the third pulley 43 is rotatably connected to the second mounting frame 41. A fourth gear 44 is fixedly connected to the rotating shaft of the third pulley 43, and the fourth gear 44 can mesh with the first gear 16.

[0044] When the above solution is put into actual use, as Figure 8 shown, when the cylindrical cam 21 rotates, it will drive the first sprocket 30 to rotate synchronously. The first sprocket 30 will drive the second sprocket 32 and the third sprocket 33 to rotate synchronously through the chain 31. The second sprocket 32 will drive the worm 34 to rotate, the worm 34 will drive the turbine 35 to rotate, and the turbine 35 will drive the second bevel gear 37 to rotate through the first bevel gear 36. The second bevel gear 37 will drive the second pulley 40 located above the second communication groove 10 to rotate synchronously. The second pulley 40 located above the second communication groove 10 will drive the third pulley 43 to rotate synchronously through the second transmission belt 42. The third pulley 43 above the second communication groove 10 will drive the first gear 16 located above the second communication groove 10 to rotate through the fourth gear 44, so that the first transmission belt 15 in the second communication groove 10 drives the bracket 12 to move from the second slide rail 7 into the third slide rail 8. The third sprocket 33 will drive the second gear 38 to rotate synchronously. The second gear 38 will drive the second pulley 40 located above the first communication groove 9 to rotate through the third gear 39. The second pulley 40 located above the first communication groove 9 will also drive the first gear 16 located above the first communication groove 9 to rotate through the second transmission belt 42, the third pulley 43 and the fourth gear 44, so that the bracket 12 in the first slide rail 7 moves into the second slide rail 7.

[0045] As a further solution of the present invention, the second mounting frame 41 is elastically slidably connected to the turntable 5 in the vertical direction.

[0046] When the above - mentioned solution is put into actual use, by setting the second mounting frame 41 to be elastically slidably connected to the turntable in the vertical direction, it can better ensure the meshing of the fourth gear 44 and the first gear 16.

[0047] As a further solution of the present invention, the bracket 12 is composed of a slider 121, a hanging rod 122 and a stop block 123. The slider 121 is slidably connected to the first slide rail 6, the second slide rail 7 and the third slide rail 8. The hanging rod 122 is fixedly connected to the bottom end of the slider 121, and the hanging rod 122 is set to be threaded. The stop block 123 is fixedly connected to the hanging rod 122.

[0048] When the above - mentioned solution is put into actual use, as Figure 9 shown, the slider 121 can move within the first slide rail 6, the second slide rail 7 and the third slide rail 8. The hollow fiber membrane can be hung on the hanging rod 122, and the stop block 123 can prevent the hollow fiber membrane from detaching from the hanging rod 122 due to inertia when the turntable rotates.

[0049] As a further solution of the present invention, the third driving assembly includes a second motor 45. The second motor 45 is fixedly connected to the base 3, and the rotating shaft of the second motor 45 is fixedly connected to the support column 4.

[0050] When the above - mentioned solution is put into actual use, the second motor 45 can drive the support column 4 to drive the turntable 5 to rotate.

[0051] A combined drying method for uniform drying, the method includes the following steps:

[0052] Step 1: Place the hollow fiber membrane to be dried on the bracket 12, and then start the heat pump dryer 2 to make the heat pump dryer 2 blow hot air into the drying chamber 1.

[0053] Step 2: After the hollow fiber membrane on the bracket 12 close to the heat pump dryer 2 is dried for a certain period of time, make the third driving assembly drive the turntable 5 to rotate half a circle.

[0054] Step 3: Then the bracket 12 located in the first slide rail 6 will move into the second slide rail 7 and the third slide rail 8; and the bracket 12 in the third slide rail 8 at the middle position of the turntable 5 will move to the right side of the first slide rail 6 to wait for drying.

[0055] Step 4: Repeat the working processes of Step 2 and Step 3 until the hollow fiber membrane is dried completely.

[0056] Working principle: As Figure 1As shown, the staff member opens the door of the drying oven 1 (not shown in the figure), and then hangs the hollow fiber membrane to be dried on the bracket 12; then closes the door, starts the heat pump dryer 2, and the heat pump dryer 2 blows hot air into the drying oven 1. The hot air will first blow onto the hollow fiber membrane closer to the heat pump dryer 2. After the heat pump dryer 2 works for a period of time, the third driving component is started; the third driving component drives the support column 4 to drive the turntable 5 to rotate 180°. At this time, the hollow fiber membrane that was initially close to the heat pump dryer 2 rotates to a position far from the heat pump dryer 2; as Figure 2 shown, at this time, the first slide rail 6 drives the bracket 12 to move towards the side close to the first communication groove 9. After the bracket 12 moves into the first communication groove 9, the first driving component drives the bracket 12 to move from the first slide rail 6 to the second slide rail 7, and then the second slide rail 7 drives the bracket 12 located therein to rotate clockwise in the Figure 2 state shown. When the bracket 12 rotates into the second communication groove 10, the first driving component in the second communication groove 10 drives the bracket 12 to move from the second slide rail 7 to the third slide rail 8, and then the third slide rail 8 drives the bracket 12 located therein to move clockwise as well. When the bracket 12 moves into the third communication groove 11, the second driving component drives the bracket 12 to move from the third slide rail 8 to the first slide rail 6; it should be noted that the bracket 12 located in the third slide rail 8 will cycle from the two third communication grooves 11 to the first slide rail 6; and the brackets on both sides of the first communication groove 9 on the right will also cycle from the first communication groove 9 to the second slide rail 7; through the settings of the turntable 5, the first slide rail, the second slide rail 7, the third slide rail 8, the first communication groove 9, the second communication groove 10, the third communication groove 11 and the bracket 12, the rotation of the turntable 5 can exchange the positions of the hollow fiber membranes on the bracket 12 in the first slide rail 6, so that the hollow fiber membrane close to the heat pump dryer 2 in the initial state can move to the side far from the heat pump dryer 2 after being dried to a certain extent, which can avoid damage to the hollow fiber membrane caused by continuous drying; at the same time, the hollow fiber membrane far from the heat pump dryer 2 is rotated to the left, which can improve the drying efficiency of the hollow fiber membrane far from the heat pump dryer 2; through the settings of the first driving component and the second driving component, the dried hollow fiber membrane can be transferred to the middle position of the turntable 5, and at the same time, the hollow fiber membrane located in the middle position of the turntable 5 can be transferred to the first slide rail 6 to better and more directly contact the hot air generated by the heat pump dryer 2, which can greatly improve the drying efficiency of the hollow fiber membrane and can better ensure that the hollow fiber membrane will not be damaged during drying.

Claims

1. A combined drying oven for uniform drying, comprising a drying oven (1) and a heat pump dryer (2) arranged outside the drying oven (1), characterized in that: A base (3) is arranged in the drying oven (1). A support column (4) is rotatably connected to the base (3). The top end of the support column (4) is fixedly connected to a turntable (5). A circular first slide rail (6), a second slide rail (7) and a third slide rail (8) are formed in the turntable (5). The diameters of the first slide rail (6), the second slide rail (7) and the third slide rail (8) decrease in sequence from outside to inside. The first slide rail (6) and the second slide rail (7) are communicated through a first communication groove (9). The second slide rail (7) and the third slide rail (8) are communicated through a second communication groove (10). The first slide rail (6) and the third slide rail (8) are communicated through a third communication groove (11). Two first communication grooves (9), second communication grooves (10) and third communication grooves (11) are all arranged in a circumferential array about the turntable (5). Brackets (12) are slidably connected in the first slide rail (6), the second slide rail (7) and the third slide rail (8). First driving components are arranged in the first communication groove (9) and the second communication groove (10). The first driving components are used for driving the brackets (12) in the first slide rail (6) to move into the second slide rail (7) and driving the brackets (12) in the second slide rail (7) to move into the third slide rail (8). A second driving component is arranged in the third communication groove (11). The second driving component is used for driving the brackets (12) in the third slide rail (8) to move into the first slide rail (6). A third driving component for driving the turntable (5) to rotate is arranged in the drying oven (1). The first driving component includes a first mounting frame (13). The first mounting frame (13) is connected to the turntable (5). A plurality of first belt pulleys (14) are rotatably connected in the first mounting frame (13). The plurality of first belt pulleys (14) are commonly connected by a first transmission belt (15). A first gear (16) is fixedly connected to the rotating shaft of the top first belt pulley (14). The second driving component can drive the first gear (16) to rotate.

2. The combined drying oven for uniform drying according to claim 1, characterized in that: The first mounting frame (13) is slidably connected to the turntable (5) in the vertical direction. A first spring (17) for resetting it is fixedly connected to the first mounting frame (13). Two push blocks (18) are fixedly connected to the top of the drying oven (1). The push blocks (18) are used for driving the first mounting frame (13) to move downward. The push blocks (18) are arranged on one side of the turntable (5) close to the heat pump dryer (2).

3. The combined drying oven for uniform drying according to claim 2, characterized in that: The second driving assembly comprises a mounting plate (19) and a driving mechanism; the mounting plate (19) is fixedly mounted on the top of the drying box (1); a push rod (20) is arranged below the mounting plate (19); the push rod (20) is capable of pushing the bracket (12) to move in the third connecting groove (11); a cylindrical cam (21) is rotatably connected to the mounting plate (19); a cam groove (22) is formed on the cylindrical cam (21); a convex block (23) is slidably fitted in the cam groove (22); the convex block (23) is capable of driving the push rod (20) to move; a first motor (24) is fixedly connected to the mounting plate (19); an output shaft of the first motor (24) is fixedly connected to a rotating shaft of the cylindrical cam (21); and the driving mechanism is used to drive the first gear (16) to rotate while the cylindrical cam (21) rotates.

4. The combined drying oven for uniform drying according to claim 3, characterized in that: The bottom of the mounting plate (19) is fixedly connected to a fixing plate (25), the fixing plate (25) is provided with a guide slot (26), the guide slot (26) is arranged in a parallelogram shape, a guide column (27) is slidably connected in the guide slot (26), the guide column (27) is fixedly connected to the push rod (20), the push rod (20) is slidably connected to a slide rod (28) in a vertical direction, the push rod (20) is fixedly connected to a second spring (29) for resetting the push rod (20), the slide rod (28) is slidably connected to the fixing plate (25), and the protrusion (23) is fixedly connected to the top of the slide rod (28).

5. The combined drying oven for uniform drying according to claim 3, characterized in that: The driving mechanism comprises a first sprocket (30), the first sprocket (30) being fixedly connected to a rotating shaft of a cylindrical cam (21), the first sprocket (30) being transmission-connected to a second sprocket (32) and a third sprocket (33) via a chain (31), the second sprocket (32) and the third sprocket (33) being rotationally connected to a mounting plate (19), a worm (34) being fixedly connected to a rotating shaft of the second sprocket (32), the worm (34) being transmission-connected to a turbine (35); a first bevel gear (36) being fixedly connected to a rotating shaft of the turbine (35), the first bevel gear (36) being meshed with a second bevel gear (37); a second gear (38) being fixedly connected to a rotating shaft of the third sprocket (33) The second gear (38) is meshed with a third gear (39); the second bevel gear (37) and the third gear (39) are both rotatably connected to a second pulley (40), and the second pulley (40) is rotatably connected to a second mounting frame (41); the turbine (35), the second bevel gear (37) and the third gear (39) are all rotatably connected to the second mounting frame (41); the second pulley (40) is connected to a third pulley (43) via a second transmission belt (42), and the third pulley (43) is rotatably connected to the second mounting frame (41); a fourth gear (44) is fixedly connected to the rotating shaft of the third pulley (43), and the fourth gear (44) can mesh with the first gear (16).

6. The combined drying oven for uniform drying according to claim 5, characterized in that: The second mounting frame (41) is elastically and slidably connected to the turntable (5) in the vertical direction.

7. The combined drying oven for uniform drying according to claim 1, characterized in that: The bracket (12) is composed of a slider (121), a hanging rod (122) and a stop block (123). The slider (121) is slidably connected to the first slide rail (6), the second slide rail (7) and the third slide rail (8). The hanging rod (122) is fixedly connected to the bottom end of the slider (121), and the hanging rod (122) is provided in a threaded shape. The stop block (123) is fixedly connected to the hanging rod (122).

8. The combined drying oven for uniform drying according to claim 1, characterized in that: The third driving assembly includes a second motor (45). The second motor (45) is fixedly connected to the base (3). The rotating shaft of the second motor (45) is fixedly connected to the support column (4).

9. A combined drying method for uniform drying, applicable to the combined drying oven for uniform drying according to any one of claims 1-8, characterized in that, This method includes the following steps: Step 1: Place the hollow fiber membrane to be dried on the bracket (12), and then start the heat pump dryer (2) to make the heat pump dryer (2) blow hot air into the drying box (1). Step 2: After the hollow fiber membrane on the bracket (12) on the side close to the heat pump dryer (2) is dried for a certain period of time, make the third driving assembly drive the turntable (5) to rotate half a circle. Step 3: Then the bracket (12) located in the first slide rail (6) will move into the second slide rail (7) and the third slide rail (8); and the bracket (12) in the third slide rail (8) at the middle position of the turntable (5) will move to the right side of the first slide rail (6) to wait for drying. Step 4: Repeat the working processes of Step 2 and Step 3 until the hollow fiber membrane is completely dried.

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